What's the word for something that's not see-through?
opaque.
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Why do shadows form?
Because an object is blocking the light.
4 of 14
Name some sources of light:
The sun, flames, light bulbs, glow worms! This is how light is produced.
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What about non-luminous objects?
Light reflects off them, and into our eyes, and that's how we see!
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How do you find 1 light year?
Speed of light times year.
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What can a ray of light do when it hits an object?
Reflect back, be absorbed or transmitted.
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What type of materials let all of the light through them?
Transparent.
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What type of material will scatter light as it tries to go through?
Translucent.
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Can light travel through opaque materials?
Nope.
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What does light travel at?
300 000 000ms.
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What does luminous mean?
Something that is bright and glowing and is giving off light.
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What are ray diagrams?
Light always travels in straight lines. This means that we can represent the rays with arrows. The direction of the arrow shows the direction of the light ray. Always use a ruler to draw them!
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Other cards in this set
Card 2
Front
What does transparent mean?
Back
Something that's see-through.
Card 3
Front
What's the word for something that's not see-through?
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